I cannot understand why it is so hard to get people interested in our current genetic diversity and how it may change out comes in everything from diet to disea

I cannot understand why it is so hard to get people interested in our current genetic diversity and how it may change out comes in everything from diet to disease. I became a bit of a amateur nutritional geneticist over the last ten years it I have cured my self (mostly) of schizoaffective bipolar disorder as well as my anklosing spondylitis through a mixture of genetics, diet and supplements. Our genes are shaped by our environment, and that was true even back 30,000 years ago. They say in that article "Despite broadly similar hunting and gathering lifestyles, people in Western Europe remain genetically distinct from those east of the Baltic Sea." Hinting and gathering what? Fish or plants? That difference will change FADS1 and FADS2 genetics in a few generations. And we all carry genetics older than our great grandparents from divers places and everyone things we should all be eating the same food and living the same life. And in he end they lay it down to population mixing! MAybe it has more to do with environmental pressures.